First of all, make sure that the balance bar is angled when not loaded as shown
here. Most high-pedal pressure problems come when the balance bar is bottoming out, causing the front brakes to get very limited pressure.
If the balance bar setup is OK, try a new set of front pads. Don't use "competition" pads - they tend to be very hard and don't work well when cold.
Changing one shim on the balance bar changes the balance roughly 6%. i.e. from 60/40 to 63/37. I wouldn't change the stock shim setup until I changed the pads.